Synthesis and tribological property study of oleic acid-modified copper sulfide nanoparticles

Synthesis and tribological property study of oleic acid-modified copper sulfide nanoparticles Oleic acid-modified copper sulfide nanoparticles were prepared by means of a surface modification technique in absolute alcohol–distilled water mixed solution. Through varying the mole ratio of surface modifier to copper sulfide, a series of nanoparticles were prepared with the mole ratio of 0.5:1, 1:1, 2:1, 3:1. The friction–reduction and antiwear behaviors of the prepared nanoparticles as an oil additive in liquid paraffin were evaluated with FALEX-6 model four-ball wear tester, and the morphologies of the rubbed surfaces were evaluated with scanning electron microscope (SEM). The results showed that at the concentration of about 0.4 wt.% when the mole ratio of oleic acid to copper sulfide was up to 2:1, the wear scar diameter (WSD) became the smallest, and the antiwear performance was best; when the mole ratio of oleic acid to copper sulfide was up to 1:1, the friction coefficient became the smallest, and the friction reducing performance was best. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Wear Elsevier

Synthesis and tribological property study of oleic acid-modified copper sulfide nanoparticles

Wear, Volume 265 (1) – Jun 25, 2008

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Publisher
Elsevier
Copyright
Copyright © 2007 Elsevier B.V.
ISSN
0043-1648
eISSN
1873-2577
D.O.I.
10.1016/j.wear.2007.09.009
Publisher site
See Article on Publisher Site

Abstract

Oleic acid-modified copper sulfide nanoparticles were prepared by means of a surface modification technique in absolute alcohol–distilled water mixed solution. Through varying the mole ratio of surface modifier to copper sulfide, a series of nanoparticles were prepared with the mole ratio of 0.5:1, 1:1, 2:1, 3:1. The friction–reduction and antiwear behaviors of the prepared nanoparticles as an oil additive in liquid paraffin were evaluated with FALEX-6 model four-ball wear tester, and the morphologies of the rubbed surfaces were evaluated with scanning electron microscope (SEM). The results showed that at the concentration of about 0.4 wt.% when the mole ratio of oleic acid to copper sulfide was up to 2:1, the wear scar diameter (WSD) became the smallest, and the antiwear performance was best; when the mole ratio of oleic acid to copper sulfide was up to 1:1, the friction coefficient became the smallest, and the friction reducing performance was best.

Journal

WearElsevier

Published: Jun 25, 2008

References

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